re-introduce redis gem

chore: upgrade nokogiri

ci: run release job on the v2.x.x branch

style: reformat .gitlab-ci.yml

ci: rename pipeline .gitlab-ci.yml to .gitlab-ci-legacy.yml

fix: update gems

ci: add .gitlab-ci.yml file

fix: upgrade rack

fix: upgrade to rails 6.1.6.1

fix: upgrade faker for upstream bug, add redis-rails

fix: redis-rails isn't required for rails 5+

chore: bundle update

chore: vuln fixes

chore: updated for audit

chore: updated gitversion config

chore: added release pipeline

chore: updated rules for CI releases

chore: updated release job

fix: fix regex

chore: added test commit

chore: updated CI

update puma to 4.3.12

Upgrade to Debian 11

See merge request !5

We want security updates, not to change major ver, so that's fine.

Manages application of security headers with many safe defaults